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The Marie Bertha Reef, Lightning Creek. 
About 12 miles in a northerly direction from Sunnyside is Mr. Mul- 
hausen's lease on Lightning Creek, 2,675 ^ eet above sea revel, and here is a 
small stamp mill. From this level to the top of the spur on the western 
side of the creek—3,150 feet above sea-level—dykes of diorite, in a decom¬ 
posed condition, and quartz veins cut through the slate and sandstone 
country. The dykes range from 10 ,to 5 feet wide, and four of them occur 
on the lease. At the junction of the dykes with the slate and sandstone 
country the latter is seamed with quartz veins that carry payable gold in 
many places. The auriferous material is, in some cases, 4 to 5 feet wide, 
and there appears to be a great quantity available. A belt of Ordovician 
strata, with diorite dykes, runs northward from this and shows on the road 
near, and west of the junction of the Snowy Creek with the Lightning 
Creek. 
The Razorback Reef. 
About 5 miles N. from Sunnyside a rough, broken ridge of high 
country occurs. The top of Razorback is about 4,700 feet above sea level. 
This reef occurs on the southern slope, and 400 feet below the top. The 
country rocks are slate and sandstone of Ordovician age. A decomposed 
diorite dyke cuts through the country. Through this quartz veins are 
numerous. The lode strikes N. 35 deg. E., and dips E. 35 deg. S., at 70 
deg, The thickness of mixed quartz and diorite is from 2 to 4 feet. Two 
tunnels have been driven into this lode and about 200 tons of ore taken out. 
Parcels of ore are now being taken to Sunnyside by pack-horse for crushing. 
The lode should certainly have more work done upon it. The quartz is 
heavily mineralized, and this constitutes the main difficulty, as at present 
such ores cannot be dealt with properly. 
Alluvial Workings. 
Lightning Creek was worked for alluvial gold in very early times, and 
is reported to have been very rich in some parts. Alluvial deposits occur at 
varying heights above the creek, and some of the old points are said to have 
paid handsomely. Judging by the manner in which the alluvial material 
has been removed down to the bed rock on the slopes above the creek, I 
should expect that in places gold would be found on these slopes in the 
joints and crevices of the rock. In the same manner, it seems most unlikely 
that the original miners took up the rough bottom! in the creek bed, and 
some gold should still be there, deep in the crevices of the slate and sand¬ 
stone bottom. 
Other creeks largely worked for alluvial gold in the neighbourhood are 
Christmas Creek, Mopoke Creek, Peg-Leg Creek, and Merrimac Creek. The 
very fact that such an extensive area has been worked for alluvial gold 
speaks strongly in favour of the existence in the adjacent hills of the lodes 
which supplied the gold. 
[.Addendum sent in 10 th March , 1905.] 
